Attachment for sewing machines



Sept. 12, 1933. s, H. GALBRA|TH ATTACHMENT FOR SEWING MACHINES FiledJuly 7. 19:51

I'IIIIIIIA IN VEN TOR D: V36 69023 6 1?: Ga lraz'l BY THEE PatentedSept. 12, 1933 e 1,926,525' e 1 7 ATTACHMENT FOR SEWING oH'I Esft YGeorge H. Galbraith, Nevv York, NIX;- v U Application July '1,-1931.;Serial Nesta-191 l 8 c aims. (cil a-141) i This inventionrelatesto new and useful improvements in a hemmer attachment for sewingmachines. I The invention relates of cloth. substantially. 1% timesaround elastic tape and feeding it in this manner'to the sewing machine.'The invention particularly proposes an arrangement whereby the tapewithin the rolled edgeof a guide can be moved slightly laterally at willtolcause. the sewing machine to stitch I and of the objects andadvantages thereofdrefer through the elastic tape .whenever this is re-,quired... m

Itis' old to construct a hemmer which encases elastic tape and to make aprovision whereby the ensue together with the entire cloth guiding-member[may be moved laterally for. causing'the stitches of the sewingmachine to stitch it down upon the material whenever thisis desired. Butin allof these prior devices it was necessary to encase the tape bybending over the edgeof the material, then guiding the tape over theedge and finally supplying a'strip of covering material over the elastictape. When" thusconstructed, it is .quite easy to reach in between thematerialsabout the tape and move the tape laterally.

' This. invention proposes particularly moving the tape laterally whencompletely enveloped in the edge of the cloth by'reason of theclothbeing turned at least 1 /.{times. V

As another one ofthe objects of this invention, it is proposed toprovidea guide having'a member for curling cloth substantially 1 timesaround elastic tape guided through the center of the membenan armpivoted onthe guide and extending into the curling member from the rearto the front for moving the tape at the center of theguide, and ajmeans'for moving the pivoted arm. q r

The invention has for a still further object the construction of ahemmer attachment for'sewing machines which is of simple, durableconstruction, dependable in use and efiicient inaction, and

' "which can be manufactured and sold at a reasonable cost. i v

" For-further comprehension of the invention,

ence will be had to the following description and accompanying drawing,and to the appended claims in which the various novel features of-theinvention are more particularly set forth.

In'the accompanying drawing forming a material part of this disclosure:I l

Fig.1 is a plan view of ahemmer attachment according tothis,invention.

1 more particularly, to a 5 hemmer attachment capable of turning theedge Fig. 2 is a front elevational view of Fi g ij l'.

.Fig. 31's a bottom view of Fig. Fig. 4 isan enlarged fragmentaryeleational View looking inthe'i direction of theflinej of Fig. 1.

Fig. '5 is fragmentary sectional; view; taken on the line 55 of Fig. 2.I

The hemmer attachmenhac'cording to this invention, comprises abody inthe .formiof'a plate having a vertical portion 10. integralfwith a tophorizontal portion 11 at right angles to the very- 7 tical portion.{Aslide or carriage IZQisarranged upon the corner between theivertic'al'and horizontal portions- .This slide has a horizontal. top

portion 13. immediately adjacent the horizontal portion 11 of the; bodyand 'a vertioalside .portion '141immediately adjacent the verticalportion 'of the body. A screw. 15 engages' through .av slot 16 in theverticalportion 14 of the slide and threadedly into the vertical portion10 of the body. This screw. together withfla pair or which alsomconnectsWiththe slide .12. The intentionis thatlthelother armpr the'bell crank.M -20 connects with suitable linkage which terminates in thefoot'pedalsothatjthe operator of the sewing machine may pivot the bellcrank to cause moving of the slide and correspondinggmovin'g;

23 is attached upon the verticalportion 10 .of

the body and'another hook 2 1. is attached upon the slide.12. A .tensi0nspring25 is engagedbe 1 of the tape as hereinafter. fully set forth. Ahook tween :these hooks and; normally 1 holds 'theslide I .12 in aretracted position.

- A tension'fmeans is provided whereby 'th e teiision at whichthe tapemay be fed throughthe cloth' guiding member can be adjusted] Thistension means comprises a plate- 26 'mo'vably' mountedupon screw 2'7projecting from .thejver'- I tical portion10. Astud v2 8 projects fromthe .tion 10 and serve to limit motionof the plate 26' "laterallyonly. Atongue 32 is bent off .irom one has Zone oflits ends connecting with.alink'22 edge of the plate and isengageable by the end 33 of. an armadjustably mounted onthe verti calportion 14 of the slide. This lattermentioneda 26 and the vertical portion 10.

1 40 pass.

arm has a slot 34 through whichscrews35pass.

These screws. are threadedly engaged into' the slide 12. The tapeindicated on the drawing by reference numeral 36 passes between theplate A 'cloth' g'uiding member 37' hasa projecting 1ug38 formed withslots 39 through which screws the horizontal portion 11 of the body forholding'the guide in fixed position on the body. The

details of the guide 37 willn'otbe. gone into en' tirely since suchguides arergenerally known.

Suffice it to say, that one edge of the guide'is' rolled around at theportion'indicated at 4 1 and another member 42 attached on the guide andalso rolled around in a manner so'that cloth may be passed through theguide and encircle the tape 36 at least l /gtimes. a slot .43 in the topofthe guide 37 allows thetapejto'pass up into the topside of the guidewhereupon another slot 44 allows it to pass immediately under the topside through the various. turns 41jand 42.

The mainffeature of this invention comprises an arm 45 whichis flatagainst the under side of the guide 3'7 and pivotally'mounted by ascrew-46'. The arm 45 extends through the turns ofthe clothguiding mechanismfrom the rear to the front at 'thepoint whe'r'e'the'ta'pe dischargesfrom the guide. Atthe front portion, thearm f 45 is enlarged andbentupon itself, indicated by numeral 47, so as to 'be'of substantially ovalform as clearly shown in Fig. 4'; This enlarging. and bending forms-ashort vtube on the end of'the arm 45 which carries theelastic'tapeandwhich is capable of moving thegtape laterally. ,The arm 45 has anextension 48 on the opposite sideof the pivot 46 and .a spring 49actsbetweentheexten sion 48 and theunderside of the guide member 37 'fornormally pivoting the arm45'into its neutral or operating position; Afinger :50 is ad justably mounted u on the slide 12by reason or screws51 engaging'through a slot 52 in the nnger and threadedly into thehorizontal portion 13 r the slide. 4 This finger 50'has anend portion 58bent-at right angles and acting against one side of a pin 54. projectingfrom the bottom oi: the extension 48. The pin" 54"is als o engaged' byspring 49 which 'actsagainst its opposite side to cause the pivoting ofthe arm 45,. I Thespring 49 is shown 'Woundjaround a peg 55 in' theunderside of the guide 37 and ending in anaperture iormed in the guidemember.

. i The operation of I the device con'sistsinloperating the bell crank20 tocau'se' the slide 12 to 'move for simultaneously releasingthetension of 'thej'tape' 36 by reason of lifting up theplate '26 andpivoting the arm 45 for moving the tape laterally within the clothguide; The cloth which is intendedjlto be placed within the. cloth-guideis. not' shown inthe drawing since this part of the disclosure formsno'part ofthe invention and is generallyknown. Whenthis-cloth is engagedupon the" guide 37 it will encirclea'round-th'e tape which runs throughthe turns of the guide. As

1 the arm 45.1noves lateral1y,fthe oval-shaped pore 'tion 470i the armwill move the tape correspondingly laterally. When the bell crankjzil isreleased the plate 26fwill move back to its original position to againtension thetape.

While I'haveshown and described the preferred embodiment of myinvention, it is to be underwithin the scope of the invention as definedin These screws engage threadedly into" "member from the rear tothe'front for moving 0 slide, a finger extending from saidslide andhaving an offset free end, a pin in the path of motion stood that Iidonot limit myself to the precise construction herein disclosed and theright is reserved to all changes and modifications coming the appendedclaims. p

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent'is:'- 1 w l. Ahemmer attachmentfor'sewing machines, comprising a guide having a member for curlingtheedge of cloth substantial1y1 times around an elastic tape passedthrough the guide, a pivf oted arm on said guide extending into thecurlingmember from the rear to the front for moving the tapelaterally, aspring acting between the arm and the guide for urging said arm into anoperative position and means for moving said pivoted arm. V a

- u 2; 'A-hern'mer attachment for sewing machines, comprisinga guidehaving a member ior curling the edge ofcloth' substantially 1 timesaround 'an'elastic' tapepassed through the guide, a piv oted arm on saidguide extending into the curling its and one of the ends of said armsextending into the, curling member from they rear'to the front formoving the tape laterally, and means for [moving said pivoted arm,comprising a pin projecting from the other. ofthe ends. of the saidarmyand means foracting against saidpi'n. f v 4, In ahemmer attachmentfor sewing mapchines, a guide having amember for curling the ideoicloth.substantially l fl times around an elastictape'ipassedthroughthe guide, a pivoted arm on said guide extending 'into'the curlingmember from the rear to' the 'front for moving the tape laterally, andmeans for moving said pivoted'arrn, including a pin'projecting from anextension of said pivoted arm, and aflmovable ifi'nger with an ofisetend acting against said pin.

an a 'hemmer attachment for sewing machines, a guide having a member forcurling the edge of cloth substantially 1% times around anelastictapepassed through the guide, a pivoted arm on said guide extending intothe curling memberfrom the rear to the front for moving the tapelaterally, and means for moving said pivoted arm, comprising a slidemeans for moving said of said finger and. mounted upon an'exten'sion .ofsaid pivotedarm, and resilient means urging said pivoted arm into oneposition.

, 6. In a hemmer attachment for sewing machines," a body," a guidehaving members for curling the edge of cloth substantially 1 timesaround anelastic tape passed through the guide, and means forsimultaneously moving .the tape laterally and releasingthe tension ofthe tape, comprising an arm pivotally mounted upon the guideforlaterallymoving the tape, a plate attached'to the body' and pressing the tape tothe' body for tensioning the tape, and means for si- I50 multaneouslymoving the arm and lifting the plate.

7. In a 'hemmer attachment for sewing machines, a body, a guide havingmembers for curling the edge of cloth substantially 1 times around anelastic tape passed through the guide,

and means for simultaneously, moving the tape laterally and releasingthe tension'of the tape,

comprising an armjpivotally mounted uponthe.

guide 'for laterally movingthe tape, a plate attached to the body and"pressing the tape to the body for tensioning the tape, and means forsimultaneously'pivotingthe arm and lifting the plate, comprising acarriage slidably mounted" upon the body andmeans attached to said car-8. In a hemmer attachment for sewing ma -1 chines, a guide having amember for curling the edge of cloth substantially 1% times around anelastic tape passed through the guide, an arm piv- I oted intermediateof its ends upon said guide and.

one of the ends of said arm extending into the curling member from therear to the front for moving the'tapelat'erally, and means formovingsaid pivoted arm, comprising a pinprojecting from the other of theendsof the'said ar'm, and means for acting against said pin, comprisinga peg. fixed-in the'sa'id guide, and a spring wound around the peg"intermediate of its ends, one end 3 of said spring engaging in anaperture formed in i the guide, the other end of said spring engagingthe pin. d v

GEORGE H. GALBRAITH."

